Elemental Sulfur-Promoted Aerobic Dehydrogenative Aromatization of Cyclohexanones with Amines
作者:Zhen Wang、Cheng Li、Huawen Huang、Guo-Jun Deng
DOI:10.1021/acs.joc.0c01122
日期:2020.7.17
2-naphthylamines is reported herein. Readily available cyclohexanones and amines (especially alkylamines) are transformed smoothly to target products. Aromatic amines can be achieved from all aliphatic reagents under aerobic metal-free reaction conditions. Control reactions show that the combinational use of elemental sulfur and molecular oxygen is exceptionally essential for this dehydrogenative aromatizaiton
Brønsted Acid Catalyzed Functionalization of Aromatic Alcohols through Nucleophilic Substitution of Hydroxyl Group
作者:Abhishek Kumar Mishra、Srijit Biswas
DOI:10.1021/acs.joc.5b02849
日期:2016.3.18
have been substituted by O-, S-, N-, and C-centered nucleophiles under solvent-free reaction conditions. The products are generated in good to excellent yields. para-Toluenesulfonic acid exhibits the best catalytic activity compared to other Brønstedacids. Experimental observations suggest that the reaction proceeds through the intermediacy of the keto tautomer of naphthol. Nucleophilic addition to
在无溶剂反应条件下,萘酚和互变异构酚衍生物的羟基已被O-,S-,N-和C中心的亲核试剂取代。产生的产品良率极佳。与其他布朗斯台德酸相比,对甲苯磺酸显示出最佳的催化活性。实验观察表明该反应通过萘酚的酮互变异构体的中间体进行。亲核加成到羰基上,然后除去水,得到所需产物。本方法提供了对取代的萘[2,1- b ]呋喃衍生物的访问。使用N生成的产品以中心为中心的亲核试剂可以进一步转化为重要种类的有机分子,例如苯并咔唑和咪唑衍生物。
Compound, organic electric element using the same, and an electronic device thereof
申请人:DUK SAN NEOLUX CO., LTD.
公开号:US10026905B2
公开(公告)日:2018-07-17
A compound represented by Formula 1. An organic electric element includes a first electrode, a second electrode, and an organic material layer including the compound of Formula 1. The organic material layer include a light emitting layer, a hole transport layer including a compound represented by Formula 2, and an emission-auxiliary layer including the compound represented by Formula 1. When the organic electric element includes the compound in the organic material layer, luminous efficiency, color purity, and life span can be improved.
Brønsted Acid-Catalyzed Reaction of <i>N</i>-arylnaphthalen-2-amines with Quinone Esters for the Construction of Carbazole and C–N Axially Chiral Carbazole Derivatives
作者:Mingliang Zhang、Pin Zhao、Dongqing Wu、Zhichao Qiu、Chenyue Zhao、Wenyu Zhang、Feng Li、Jing Zhou、Lantao Liu
DOI:10.1021/acs.joc.2c02518
日期:2023.3.3
efficient synthetic method of carbazole derivatives from readily available N-arylnaphthalen-2-amines and quinone esters catalyzed by Brønsted acid. With this strategy, a series of carbazole derivatives were obtained in good to excellent yields (76 to >99) under mild conditions. Large scale reaction illustrated the synthetic utility of this protocol. Meanwhile, a series of C–N axially chiral carbazole derivatives
Photocatalyzed Aerobic Dearomatization of Naphthylamines under Visible‐Light Irradiation
作者:Aleksandr Voronov、Alessandra Casnati、Matteo Hoch、Francesco Pancrazzi、Paolo Pio Mazzeo、Daniele Merli、Giovanni Maestri、Péter Pál Fehér、András Stirling、Luca Capaldo、Nicola Della Ca'
DOI:10.1002/adsc.202400281
日期:2024.10.25
The dearomatization of aromatic substrates via photocatalytic methodologies has gained escalating prominence to access molecular complexity. Although much focus has been put on non-active arenes, naphthols and N-based heteroaromatics, arylamines have so far remained in the background. Herein, we report a photocatalytic strategy for the aerobic, dearomative hydroxylation of naphthylamines under visible-light
通过光催化方法对芳香族底物进行脱芳烃化已经获得了越来越重要的关注,以达到分子复杂性。尽管人们将大量注意力放在非活性芳烃、萘酚和 N 基杂芳烃上,但迄今为止,芳胺仍处于背景中。在此,我们报道了一种在可见光照射下萘胺的有氧、脱氢羟基化的光催化策略。我们的研究强调了单线态氧的产生是芳香性破坏的可行机制,减轻了由目标芳胺直接氧化引起的选择性问题。最后,我们在后期多元化活动中展示了所获得的脱芳烃产品的合成价值。